#ifndef _FOURVECTOR_SUMMER_HH_
#define _FOURVECTOR_SUMMER_HH_

#ifdef USE_CDFEDM2
//////////////////////////////////////////////////////////////////////////
//
// Component: FourVectorSummer.hh
// Purpose: This class inherits from TowerSummer.  Physics towers
//          are summed as four-vectors. 
//          N.B. The four-vector will be massless
//          
// Created: 20/09/99  Pierre Savard (based on Jodi Lamoureux's class)
// History: 
//
//////////////////////////////////////////////////////////////////////////

#include "Calor/TowerSummer.hh"

class FourVectorSummer : public TowerSummer {
  public:
    
    //
    // Memory management
    //
        
    // Default constructor

  //    FourVectorSummer(){};
    
    // Default copy constructor and assignment operator do the right thing.
    
    // Destructor
    
  // ~FourVectorSummer(){};
    
    //
    // Testing
    //
    
    //
    // Class methods
    //
  std::string summerName() const;

  Centroid sumTowers(const PhysicsTowerView& tower) const;
  HepLorentzVector sumFourVector(const PhysicsTowerView& tower) const;  
  float dRsquared(const PhysicsTower* tower, float eta, float phi);
  
private:

  std::string _summerName;

};

inline std::string FourVectorSummer::summerName() const{return _summerName;} 
// } // namespace calor

#endif  // USE_CDFEDM2
#endif // _FOURVECTOR_SUMMER_HH_